Herb grinder



FIG. 1 is an exploded perspective view of a herb grinder showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top end view thereof; and,

FIG. 6 is a bottom end view thereof.

The right side view is a mirror image of FIG. 4. 

The ornamental design for a herb grinder, as shown and described. 